Professors Adam and Ben each independently pick 20 problems uniformly at random from a set of 100 problems to place on an exam. How many problems do we expect will be picked by both of them? How many problems do we expect will be picked by exactly one of them?

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

6.5

step-by-step explanation:

you said it was in the question

~courtney

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°